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he HTC Desire HD and HTC Desire Z under the name of HTC Ace and HTC vision respectively have already been discussed on the net. Now some specs of Desire HD and Desire Z have confirmed. The HTC Desire Z, also known as Vision is actually very similar with Desire HD. Both smartphone have been equipped with 1 GHz processor from Qualcomm Snapdragon and almost similar in specs. The Desire Z has a 3.7 in AMOLED display while the Desire HD has 4.3 inches. Other specs are almost similar expects Operating system.